Cheap Flights from Ontario to Philadelphia
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Cheap Flights from Ontario to Philadelphia
Cheap Flights from Ontario to Philadelphia starting at S$ 60
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Round-trip
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One way
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Cheapest nonstop
ONT 05:057h 39mNonstopPHL 15:44Ontario - Philadelphia | Sat, May 10 | United Airlines
PHL 07:455h 46mNonstopSIN 10:31Philadelphia - Ontario | Sun, May 18 | Spirit AirlinesS$ 421 S$ 59228% OFF28% OFFS$ 592 S$ 421 -
ONT 05:057h 39mNonstopPHL 15:44Ontario - Philadelphia | Sat, May 3 | United Airlines
PHL 07:455h 46mNonstopSIN 10:31Philadelphia - Ontario | Wed, May 7 | Spirit AirlinesS$ 479 S$ 59219% OFF19% OFFS$ 592 S$ 479
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ONT 14:4312h 31m1 stopsPHL 06:14Ontario - Philadelphia | Wed, Mar 26 | Frontier Airlines
PHL 13:0511h 30m1 stopsSIN 21:35Philadelphia - Ontario | Wed, Apr 2 | Frontier AirlinesS$ 175 S$ 59270% OFF70% OFFS$ 592 S$ 175 -
ONT 10:4417h 3m1 stopsPHL 06:47Ontario - Philadelphia | Wed, Apr 30 | Frontier Airlines
PHL 18:5415h 30m1 stopsSIN 07:24Philadelphia - Ontario | Thu, May 1 | Frontier AirlinesS$ 17570% OFFS$ 592 S$ 175
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ONT 14:4313h 4m1 stopsPHL 06:47Ontario - Philadelphia | Tue, Apr 1 | Frontier Airlines
PHL 13:5310h 42m1 stopsSIN 21:35Philadelphia - Ontario | Tue, Apr 8 | Frontier AirlinesS$ 18669% OFFS$ 592 S$ 186
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ONT 14:4313h 4m1 stopsPHL 06:47Ontario - Philadelphia | Wed, Apr 2 | Frontier Airlines
PHL 08:0010h 4m1 stopsSIN 15:04Philadelphia - Ontario | Tue, Apr 8 | Frontier AirlinesS$ 18868% OFFS$ 592 S$ 188
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ONT 18:359h 17m1 stopsPHL 06:52Ontario - Philadelphia | Thu, May 8 | Frontier Airlines
PHL 18:5416h 40m1 stopsSIN 08:34Philadelphia - Ontario | Sat, May 10 | Frontier AirlinesS$ 19168% OFFS$ 592 S$ 191
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ONT 14:4312h 31m1 stopsPHL 06:14Ontario - Philadelphia | Tue, Mar 25 | Frontier Airlines
PHL 11:4710h 11m1 stopsSIN 18:58Philadelphia - Ontario | Sat, Mar 29 | Frontier AirlinesS$ 19567% OFFS$ 592 S$ 195
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ONT 21:3529h 39m1 stopsPHL 06:14Ontario - Philadelphia | Mon, Mar 24 | Frontier Airlines
PHL 09:2615h 9m1 stopsSIN 21:35Philadelphia - Ontario | Tue, Apr 1 | Frontier AirlinesS$ 20066% OFFS$ 592 S$ 200
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ONT 00:5925h 30m1 stopsPHL 05:29Ontario - Philadelphia | Fri, Apr 11 | Frontier Airlines
PHL 22:5923h 19m1 stopsSIN 19:18Philadelphia - Ontario | Mon, Apr 14 | Frontier AirlinesS$ 20266% OFFS$ 592 S$ 202
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ONT 19:118h 28m1 stopsPHL 06:39Ontario - Philadelphia | Fri, Mar 28 | Frontier Airlines
PHL 13:0511h 30m1 stopsSIN 21:35Philadelphia - Ontario | Wed, Apr 2 | Frontier AirlinesS$ 21364% OFFS$ 592 S$ 213
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ONT 14:4312h 31m1 stopsPHL 06:14Ontario - Philadelphia | Mon, Mar 31 | Frontier Airlines
PHL 06:006h 16mNonstopSIN 09:16Philadelphia - Ontario | Thu, Apr 3 | Spirit AirlinesS$ 21564% OFFS$ 592 S$ 215
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ONT 13:0017h 25m1 stopsPHL Invalid DateOntario - Philadelphia | Tue, Mar 25 | Normal Airline
PHL 15:006hNonstopONT 16:00Philadelphia - Ontario | Thu, Mar 27 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ONT 05:057h 39mNonstopPHL 15:44Ontario - Philadelphia | Sat, May 10 | United AirlinesS$ 263 S$ 40435% OFF35% OFFS$ 404 S$ 263
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ONT 05:057h 39mNonstopPHL 15:44Ontario - Philadelphia | Tue, May 20 | United AirlinesS$ 328 S$ 40419% OFF19% OFFS$ 404 S$ 328
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ONT 18:5918h 59m1 stopsPHL 16:58Ontario - Philadelphia | Tue, Apr 8 | Frontier AirlinesS$ 60 S$ 40485% OFF85% OFFS$ 404 S$ 60
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ONT 00:5925h 21m1 stopsPHL 05:20Ontario - Philadelphia | Tue, Apr 15 | Frontier AirlinesS$ 6584% OFFS$ 404 S$ 65
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ONT 00:5925h 11m1 stopsPHL 05:10Ontario - Philadelphia | Wed, Mar 26 | Frontier AirlinesS$ 6983% OFFS$ 404 S$ 69
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ONT 00:5925h 16m1 stopsPHL 05:15Ontario - Philadelphia | Wed, Apr 9 | Frontier AirlinesS$ 7282% OFFS$ 404 S$ 72
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ONT 15:1710h 58m1 stopsPHL 05:15Ontario - Philadelphia | Wed, Apr 2 | Frontier AirlinesS$ 7681% OFFS$ 404 S$ 76
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ONT 00:5925h 32m1 stopsPHL 05:31Ontario - Philadelphia | Thu, Apr 3 | Frontier AirlinesS$ 8280% OFFS$ 404 S$ 82
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ONT 14:2213h 25m1 stopsPHL 06:47Ontario - Philadelphia | Sat, Apr 12 | Frontier AirlinesS$ 8380% OFFS$ 404 S$ 83
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ONT 10:5316h 54m1 stopsPHL 06:47Ontario - Philadelphia | Thu, Apr 10 | Frontier AirlinesS$ 8679% OFFS$ 404 S$ 86
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ONT 10:4417h 3m1 stopsPHL 06:47Ontario - Philadelphia | Wed, Apr 23 | Frontier AirlinesS$ 8978% OFFS$ 404 S$ 89
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ONT 22:1529h 37m1 stopsPHL 06:52Ontario - Philadelphia | Thu, May 1 | Frontier AirlinesS$ 9676% OFFS$ 404 S$ 96
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ONT 13:0017h 25m1 stopsPHL Invalid DateOntario - Philadelphia | Tue, Mar 25 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Cheapest time to fly from Ontario to Philadelphia
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Frequently Asked Questions
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When to buy flight tickets from Ontario (ONT) to Philadelphia (PHL) the cheapest?
Airlines adjust prices for flights from Ontario to Philadelphia based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much is a flight from Ontario (ONT) to Philadelphia (PHL) cost?
According to Trip.com's data, the lowest price is around S$ 448. -
What's the most popular airline for direct flights from Ontario (ONT) to Philadelphia (PHL)?
Spirit Airlines operates 2 direct flights from Ontario (ONT) to Philadelphia (PHL). -
How many airports in Philadelphia?
There are 2 airports near Philadelphia: Philadelphia International Airport and Trenton Mercer Airport.
How to find a cheap flight from Ontario to Philadelphia
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Philadelphia. Book your flights at the right time and save more.
Choose your dates flexibly and get the best deals on flights from Ontario to Philadelphia.
Tap 'Date' on the flight search bar to browse the calendar for Ontario to Philadelphia airfare over the next 6 months in 2025. If you're looking to fly within the next 3 months, the cheapest date seems to be Sat, May 10, with one-way flights starting at S$ 263.
Compare cheap flight deals from hundreds of airlines for Ontario to Philadelphia flights.
Our extensive search lets you compare prices from over 500 airlines to find the cheapest flights from Ontario to Philadelphia. The cheapest flight at the moment is with United Airlines.
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Don't miss out on cheap deals and promo codes for Ontario to Philadelphia flights.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. Sign up for a free membership for more exclusive flight deals.
Book early or wait for last-minute deals.
It's always better to book early. Flight tickets are often at their lowest when first released, usually a year ahead of departure. Keep an eye out as soon as your desired flights open for booking. If you miss the early deals, you may still find lower prices closer to your travel date.
Search for flights on the go.
For the best flight booking experience on the go, download Trip.com and search for cheap flights from Ontario to Philadelphia to get your exclusive deals.
Find cheapest flight ticket from Ontario to Philadelphia
| Cheapest one-way flight price | S$ 59 |
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| Cheapest return ticket price | S$ 215 |
| Off-season for travel | April |
| Peak season for travel | April |
| Flight distance | 8,753.39km |
| Popular airline | United Airlines |
Plan Your Trip Around Philadelphia
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